What causes the stem of dendrobium to turn yellow? What is the reason for the yellowing of the leave

Dendrobium leaves in the process of growth yellowing, when the summer needs to be placed in the shade carefully maintained, usually placed in full sunlight, watering improper control of watering, soil dry and then watering, generally every 2 3 days watering, excessive fertilization irrigation dilute fertilizer, suffering from pests and diseases spraying the corresponding agents, so that it gradually recovers vitality.

1. Proper lighting.

The yellowing of the leaves of Dendrobium may be caused by too much light or lack of light, and it needs to be placed in a cool place for maintenance in the summer when the light is too strong, and spray water on the soil and leaves.

2. Control the amount of water.

Dendrobium if improper watering will also make its leaves yellow, generally after overwatering, can be placed in the sun to wait for the soil to dry out before watering, water rotten roots need to be cut first and replaced in time to replace the soil maintenance, usually keep the soil moist on it, generally every 2 3 days to water well.

3. Dilute fertilizer.

Generally, too much fertilization will also make its leaves yellow, so as a result, a large amount of water can be poured into the soil to dilute all the fertilizer in the soil, and then placed in a ventilated, dry and sunny place to maintain, to avoid irrigation and rotten roots, so that the leaves are yellow and wilted and die.

4. Spray the agent.

In fact, the yellowing of Dendrobium leaves may also be suffering from leaf spot disease, suffering from aphids, red spiders and other pests and diseases, so it is necessary to deal with diseased branches in a timely manner, improve the growth environment of Dendrobium, and spray the corresponding mancozeb, Sukelin, dichlorvos, marathon emulsion and other pests and diseases to prevent and control.

Causes of yellowing of Dendrobium orchid leaves:

Improper watering, too much sunlight, too little fertilizer, too low humidity.

1. Improper watering.

The yellowing of the leaves of Dendrobium orchid may be due to improper watering. In the process of maintaining Dendrobium orchid, too much watering will lead to water accumulation in the pot, yellowing of the leaves, too little watering will lead to dry soil, yellowing of leaves, generally in the maintenance of Dianlia orchid need to be judged according to the dryness of the ten soils whether to water, it is best to keep the soil in a moist state at all times.

2. The light is too strong.

The growth of Dendrobium orchid needs proper light, and in daily maintenance, it can be placed in an outdoor sunny environment, but in summer, it is necessary to move Dendrobium orchid into an environment with sufficient astigmatism to avoid excessive light, resulting in leaf burns and yellowing.

Dendrobium orchid. 3. Improper fertilization.

Orchid needs proper nutrients in the growth process, insufficient fertilization will cause Orchid to not have enough nutrients for growth, poor growth, yellowing of leaves, excessive fertilization will lead to damage to the roots of Dendrobium orchid, yellowing of leaves. In the maintenance of dendrobium orchid, it is necessary to reasonably control the amount of fertilizer, and dilute the fertilizer before use.

4. The environment is dry.

Dendrobium orchid is suitable for growing in a humid environment, and its growth environment is too dry, which will cause the stone to grow normally, and the leaves will rise yellow. In addition to watering water in the soil of Dendrobium orchid planting in daily life, you can also spray water on the plants appropriately to keep the environment moist.

First, the matrix is uncomfortable.

Rationale: Dendrobium is suitable for growing in loose substrates. If the substrate is not suitable, it will cause problems with the whole plant and the leaves will turn yellow. Solution: The substrate of Dendrobium can be changed, and a breathable material can be selected to prepare the matrix.

2. Improper watering.

Reason: Dendrobium should be watered regularly to facilitate growth and maintenance. If there is a lack of water, the soil will dry out and the plant will not be able to absorb the water, resulting in yellowing of the leaves.

Excessive watering and excessive wetting of the substrate can also cause rotten roots to turn yellow. Solution: If there is a shortage of water, water it in time to keep the substrate moist.

If the stagnant water is moist and abrasive, the rotten roots should be removed to promote the evaporation of water in the substrate.

3. Improper fertilization.

Cause: Inadvertently applying too much fertilizer can also cause the roots to be unbearable, resulting in yellow leaves on the burned roots. Solution: Fertilize regularly according to the growth, but avoid applying thick fertilizer. Once the fertilizer is applied too much, it can be diluted with watering immediately.

Fourth, high temperature exposure.

Reason: In the case of high summer temperatures, if exposed to the sun, it will also cause the leaves to burn and turn yellow. Solution: In summer, you must avoid strong light exposure, block 60% of the light in time, and ensure contact with soft astigmatism.

5. Dry air.

Cause: The air in the growing environment is too dry, which can also cause the leaves to turn yellow. Solution: When the evaporation rate is fast in summer, you can spray water mist on the plants, which can increase the humidity.

You can apply some nitrogen fertilizer, the right amount of light to let it see the light, the water is not too wet, the soil is best to be a good substrate soil in the gardening field, and the ventilation and drainage are better.

This must be flooded! You don't water too much, Dendrobium attaches great importance to temperament! That is, to breathe at the root! Thank you.

Maybe it's not nutritious, so put a little fertilizer.

Dendrobium orchid is very easy to raise, your leaves are yellow because the substrate is not right, the substrate is not well drained and it is easy to rot the roots, it is best not to plant it with soil.